#include "string.h"
#include <unistd.h>
+
+/* note that this is not marked as static as it must be available from outside jtag.c for those
+ that implement the jtag_xxx() minidriver layer
+*/
+int jtag_error=ERROR_OK;
+
+
char* tap_state_strings[16] =
{
"tlr",
* 3: Pause-DR
* 4: Shift-IR
* 5: Pause-IR
+ *
+ * SD->SD and SI->SI have to be caught in interface specific code
*/
u8 tap_move[6][6] =
{
{TAP_SDS, TAP_RTI} /* UI */
};
+char* jtag_event_strings[] =
+{
+ "JTAG controller reset(tms or TRST)"
+};
+
enum tap_state end_state = TAP_TLR;
enum tap_state cur_state = TAP_TLR;
int jtag_trst = 0;
int jtag_nsrst_delay = 0; /* default to no nSRST delay */
int jtag_ntrst_delay = 0; /* default to no nTRST delay */
+/* maximum number of JTAG devices expected in the chain
+ */
+#define JTAG_MAX_CHAIN_SIZE 20
+
/* callbacks to inform high-level handlers about JTAG state changes */
jtag_event_callback_t *jtag_event_callbacks;
/* jtag interfaces (parport, FTDI-USB, TI-USB, ...)
*/
+
+#if BUILD_ECOSBOARD == 1
+ extern jtag_interface_t eCosBoard_interface;
+#endif
+
#if BUILD_PARPORT == 1
extern jtag_interface_t parport_interface;
#endif
-#if BUILD_FTDI2232 == 1
- extern jtag_interface_t ftdi2232_interface;
+#if BUILD_FT2232_FTD2XX == 1
+ extern jtag_interface_t ft2232_interface;
#endif
-#if BUILD_FTD2XX == 1
- extern jtag_interface_t ftd2xx_interface;
+#if BUILD_FT2232_LIBFTDI == 1
+ extern jtag_interface_t ft2232_interface;
#endif
#if BUILD_AMTJTAGACCEL == 1
extern jtag_interface_t ep93xx_interface;
#endif
+#if BUILD_AT91RM9200 == 1
+ extern jtag_interface_t at91rm9200_interface;
+#endif
+
+#if BUILD_GW16012 == 1
+ extern jtag_interface_t gw16012_interface;
+#endif
+
+#if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
+ extern jtag_interface_t presto_interface;
+#endif
+
+#if BUILD_USBPROG == 1
+ extern jtag_interface_t usbprog_interface;
+#endif
+
jtag_interface_t *jtag_interfaces[] = {
+#if BUILD_ECOSBOARD == 1
+ &eCosBoard_interface,
+#endif
#if BUILD_PARPORT == 1
&parport_interface,
#endif
-#if BUILD_FTDI2232 == 1
- &ftdi2232_interface,
+#if BUILD_FT2232_FTD2XX == 1
+ &ft2232_interface,
#endif
-#if BUILD_FTD2XX == 1
- &ftd2xx_interface,
+#if BUILD_FT2232_LIBFTDI == 1
+ &ft2232_interface,
#endif
#if BUILD_AMTJTAGACCEL == 1
&amt_jtagaccel_interface,
#endif
#if BUILD_EP93XX == 1
&ep93xx_interface,
+#endif
+#if BUILD_AT91RM9200 == 1
+ &at91rm9200_interface,
+#endif
+#if BUILD_GW16012 == 1
+ &gw16012_interface,
+#endif
+#if BUILD_PRESTO_LIBFTDI == 1 || BUILD_PRESTO_FTD2XX == 1
+ &presto_interface,
+#endif
+#if BUILD_USBPROG == 1
+ &usbprog_interface,
#endif
NULL,
};
jtag_interface_t *jtag = NULL;
/* configuration */
-char* jtag_interface = NULL;
-int jtag_speed = -1;
+jtag_interface_t *jtag_interface = NULL;
+int jtag_speed = 0;
+int jtag_speed_post_reset = 0;
+
/* forward declarations */
+void jtag_add_statemove(enum tap_state endstate);
+void jtag_add_pathmove(int num_states, enum tap_state *path);
+void jtag_add_runtest(int num_cycles, enum tap_state endstate);
+int jtag_add_reset(int trst, int srst);
+void jtag_add_end_state(enum tap_state endstate);
+void jtag_add_sleep(u32 us);
+int jtag_execute_queue(void);
+int jtag_cancel_queue(void);
/* jtag commands */
int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
{
jtag_event_callback_t *callback = jtag_event_callbacks;
- DEBUG("jtag event: %i", event);
+ DEBUG("jtag event: %s", jtag_event_strings[event]);
while (callback)
{
device = device->next;
i++;
}
-
- return NULL;
+
+ ERROR("jtag device number %d not defined", num);
+ exit(-1);
}
void* cmd_queue_alloc(size_t size)
offset = (*p_page)->used;
(*p_page)->used += size;
- return ((*p_page)->address) + offset;
+ u8 *t=(u8 *)((*p_page)->address);
+ return t + offset;
}
void cmd_queue_free()
cmd_queue_pages = NULL;
}
-int jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state)
+static void jtag_prelude1()
{
- jtag_command_t **last_cmd;
- jtag_device_t *device;
- int i, j;
- int scan_size = 0;
- /* int changed = 0; */
-
if (jtag_trst == 1)
{
WARNING("JTAG command queued, while TRST is low (TAP in reset)");
- return ERROR_JTAG_TRST_ASSERTED;
+ jtag_error=ERROR_JTAG_TRST_ASSERTED;
+ return;
}
- /*
- for (i=0; i<num_fields; i++)
- {
- device = jtag_get_device(fields[i].device);
- if (device)
- {
- if (buf_cmp(device->cur_instr, fields[i].out_value, device->ir_length))
- changed = 1;
- }
- else
- {
- ERROR("inexistant device specified for ir scan");
- return ERROR_INVALID_ARGUMENTS;
- }
- }
+ if (cmd_queue_end_state == TAP_TLR)
+ jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
+}
- if (!changed)
- return ERROR_OK;
- */
+static void jtag_prelude(enum tap_state state)
+{
+ jtag_prelude1();
+
+ if (state != -1)
+ cmd_queue_end_state = state;
+
+ cmd_queue_cur_state = cmd_queue_end_state;
+}
+
+void jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state)
+{
+ jtag_prelude(state);
+ int retval=interface_jtag_add_ir_scan(num_fields, fields, cmd_queue_end_state);
+ if (retval!=ERROR_OK)
+ jtag_error=retval;
+}
+
+int MINIDRIVER(interface_jtag_add_ir_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
+{
+ jtag_command_t **last_cmd;
+ jtag_device_t *device;
+ int i, j;
+ int scan_size = 0;
+
+
last_cmd = jtag_get_last_command_p();
/* allocate memory for a new list member */
(*last_cmd)->cmd.scan->num_fields = jtag_num_devices; /* one field per device */
(*last_cmd)->cmd.scan->fields = cmd_queue_alloc(jtag_num_devices * sizeof(scan_field_t));
(*last_cmd)->cmd.scan->end_state = state;
-
- if (state != -1)
- cmd_queue_end_state = state;
- if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
- jtag_call_event_callbacks(JTAG_TRST_RELEASED);
-
- if (cmd_queue_end_state == TAP_TLR)
- jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
-
- cmd_queue_cur_state = cmd_queue_end_state;
-
- for (i=0; i < jtag_num_devices; i++)
+ for (i = 0; i < jtag_num_devices; i++)
{
int found = 0;
device = jtag_get_device(i);
(*last_cmd)->cmd.scan->fields[i].device = i;
(*last_cmd)->cmd.scan->fields[i].num_bits = scan_size;
(*last_cmd)->cmd.scan->fields[i].in_value = NULL;
- if (jtag_verify_capture_ir)
- {
- (*last_cmd)->cmd.scan->fields[i].in_check_value = buf_cpy(device->expected, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
- (*last_cmd)->cmd.scan->fields[i].in_check_mask = buf_cpy(device->expected_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
- }
- else
- {
- (*last_cmd)->cmd.scan->fields[i].in_check_value = NULL;
- (*last_cmd)->cmd.scan->fields[i].in_check_mask = NULL;
- }
- (*last_cmd)->cmd.scan->fields[i].in_handler = NULL;
- (*last_cmd)->cmd.scan->fields[i].in_handler_priv = NULL;
+ (*last_cmd)->cmd.scan->fields[i].in_handler = NULL; /* disable verification by default */
/* search the list */
- for (j=0; j < num_fields; j++)
+ for (j = 0; j < num_fields; j++)
{
if (i == fields[j].device)
{
found = 1;
(*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[j].out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
(*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[j].out_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
+
+ if (jtag_verify_capture_ir)
+ {
+ if (fields[j].in_handler==NULL)
+ {
+ jtag_set_check_value((*last_cmd)->cmd.scan->fields+i, device->expected, device->expected_mask, NULL);
+ } else
+ {
+ (*last_cmd)->cmd.scan->fields[i].in_handler = fields[j].in_handler;
+ (*last_cmd)->cmd.scan->fields[i].in_handler_priv = fields[j].in_handler_priv;
+ (*last_cmd)->cmd.scan->fields[i].in_check_value = device->expected;
+ (*last_cmd)->cmd.scan->fields[i].in_check_mask = device->expected_mask;
+ }
+ }
device->bypass = 0;
break;
(*last_cmd)->cmd.scan->fields[i].out_value = buf_set_ones(cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
(*last_cmd)->cmd.scan->fields[i].out_mask = NULL;
device->bypass = 1;
-
+
}
/* update device information */
return ERROR_OK;
}
-int jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state)
+void jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state state)
{
- jtag_command_t **last_cmd;
- int i;
-
- if (jtag_trst == 1)
- {
- WARNING("JTAG command queued, while TRST is low (TAP in reset)");
- return ERROR_JTAG_TRST_ASSERTED;
- }
+ jtag_prelude(state);
+
+ int retval=interface_jtag_add_plain_ir_scan(num_fields, fields, cmd_queue_end_state);
+ if (retval!=ERROR_OK)
+ jtag_error=retval;
+}
+int MINIDRIVER(interface_jtag_add_plain_ir_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
+{
+ int i;
+ jtag_command_t **last_cmd;
+
last_cmd = jtag_get_last_command_p();
/* allocate memory for a new list member */
(*last_cmd)->cmd.scan->fields = cmd_queue_alloc(num_fields * sizeof(scan_field_t));
(*last_cmd)->cmd.scan->end_state = state;
- if (state != -1)
- cmd_queue_end_state = state;
-
- if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
- jtag_call_event_callbacks(JTAG_TRST_RELEASED);
-
- if (cmd_queue_end_state == TAP_TLR)
- jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
-
- cmd_queue_cur_state = cmd_queue_end_state;
-
for (i = 0; i < num_fields; i++)
{
int num_bits = fields[i].num_bits;
(*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits);
(*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[i].out_mask, cmd_queue_alloc(num_bytes), num_bits);
(*last_cmd)->cmd.scan->fields[i].in_value = fields[i].in_value;
- (*last_cmd)->cmd.scan->fields[i].in_check_value = buf_cpy(fields[i].in_check_value, cmd_queue_alloc(num_bytes), num_bits);
- (*last_cmd)->cmd.scan->fields[i].in_check_mask = buf_cpy(fields[i].in_check_mask, cmd_queue_alloc(num_bytes), num_bits);
+ (*last_cmd)->cmd.scan->fields[i].in_check_value = fields[i].in_check_value;
+ (*last_cmd)->cmd.scan->fields[i].in_check_mask = fields[i].in_check_mask;
(*last_cmd)->cmd.scan->fields[i].in_handler = NULL;
(*last_cmd)->cmd.scan->fields[i].in_handler_priv = NULL;
}
return ERROR_OK;
}
-int jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state)
+void jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state)
+{
+ jtag_prelude(state);
+
+ int retval=interface_jtag_add_dr_scan(num_fields, fields, cmd_queue_end_state);
+ if (retval!=ERROR_OK)
+ jtag_error=retval;
+}
+
+int MINIDRIVER(interface_jtag_add_dr_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
{
int i, j;
int bypass_devices = 0;
int field_count = 0;
- jtag_command_t **last_cmd = jtag_get_last_command_p();
- jtag_device_t *device = jtag_devices;
int scan_size;
- if (jtag_trst == 1)
- {
- WARNING("JTAG command queued, while TRST is low (TAP in reset)");
- return ERROR_JTAG_TRST_ASSERTED;
- }
+ jtag_command_t **last_cmd = jtag_get_last_command_p();
+ jtag_device_t *device = jtag_devices;
/* count devices in bypass */
while (device)
(*last_cmd)->cmd.scan->num_fields = num_fields + bypass_devices;
(*last_cmd)->cmd.scan->fields = cmd_queue_alloc((num_fields + bypass_devices) * sizeof(scan_field_t));
(*last_cmd)->cmd.scan->end_state = state;
-
- if (state != -1)
- cmd_queue_end_state = state;
-
- if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
- jtag_call_event_callbacks(JTAG_TRST_RELEASED);
- if (cmd_queue_end_state == TAP_TLR)
- jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
-
- cmd_queue_cur_state = cmd_queue_end_state;
-
- for (i=0; i < jtag_num_devices; i++)
+ for (i = 0; i < jtag_num_devices; i++)
{
int found = 0;
(*last_cmd)->cmd.scan->fields[field_count].device = i;
- for (j=0; j < num_fields; j++)
+ for (j = 0; j < num_fields; j++)
{
if (i == fields[j].device)
{
(*last_cmd)->cmd.scan->fields[field_count].out_value = buf_cpy(fields[j].out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
(*last_cmd)->cmd.scan->fields[field_count].out_mask = buf_cpy(fields[j].out_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
(*last_cmd)->cmd.scan->fields[field_count].in_value = fields[j].in_value;
- (*last_cmd)->cmd.scan->fields[field_count].in_check_value = buf_cpy(fields[j].in_check_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
- (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = buf_cpy(fields[j].in_check_mask, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
+ (*last_cmd)->cmd.scan->fields[field_count].in_check_value = fields[j].in_check_value;
+ (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = fields[j].in_check_mask;
(*last_cmd)->cmd.scan->fields[field_count].in_handler = fields[j].in_handler;
(*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = fields[j].in_handler_priv;
}
}
if (!found)
{
+#ifdef _DEBUG_JTAG_IO_
/* if a device isn't listed, the BYPASS register should be selected */
if (!jtag_get_device(i)->bypass)
{
ERROR("BUG: no scan data for a device not in BYPASS");
exit(-1);
}
-
+#endif
/* program the scan field to 1 bit length, and ignore it's value */
(*last_cmd)->cmd.scan->fields[field_count].num_bits = 1;
(*last_cmd)->cmd.scan->fields[field_count].out_value = NULL;
}
else
{
+#ifdef _DEBUG_JTAG_IO_
/* if a device is listed, the BYPASS register must not be selected */
if (jtag_get_device(i)->bypass)
{
ERROR("BUG: scan data for a device in BYPASS");
exit(-1);
}
+#endif
}
}
return ERROR_OK;
}
-int jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state)
+void MINIDRIVER(interface_jtag_add_dr_out)(int device_num,
+ int num_fields,
+ int *num_bits,
+ u32 *value,
+ enum tap_state end_state)
{
int i;
+ int field_count = 0;
+ int scan_size;
+ int bypass_devices = 0;
+
jtag_command_t **last_cmd = jtag_get_last_command_p();
+ jtag_device_t *device = jtag_devices;
+ /* count devices in bypass */
+ while (device)
+ {
+ if (device->bypass)
+ bypass_devices++;
+ device = device->next;
+ }
- if (jtag_trst == 1)
+ /* allocate memory for a new list member */
+ *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
+ last_comand_pointer = &((*last_cmd)->next);
+ (*last_cmd)->next = NULL;
+ (*last_cmd)->type = JTAG_SCAN;
+
+ /* allocate memory for dr scan command */
+ (*last_cmd)->cmd.scan = cmd_queue_alloc(sizeof(scan_command_t));
+ (*last_cmd)->cmd.scan->ir_scan = 0;
+ (*last_cmd)->cmd.scan->num_fields = num_fields + bypass_devices;
+ (*last_cmd)->cmd.scan->fields = cmd_queue_alloc((num_fields + bypass_devices) * sizeof(scan_field_t));
+ (*last_cmd)->cmd.scan->end_state = end_state;
+
+ for (i = 0; i < jtag_num_devices; i++)
{
- WARNING("JTAG command queued, while TRST is low (TAP in reset)");
- return ERROR_JTAG_TRST_ASSERTED;
+ (*last_cmd)->cmd.scan->fields[field_count].device = i;
+
+ if (i == device_num)
+ {
+ int j;
+#ifdef _DEBUG_JTAG_IO_
+ /* if a device is listed, the BYPASS register must not be selected */
+ if (jtag_get_device(i)->bypass)
+ {
+ ERROR("BUG: scan data for a device in BYPASS");
+ exit(-1);
+ }
+#endif
+ for (j = 0; j < num_fields; j++)
+ {
+ u8 out_value[4];
+ scan_size = num_bits[j];
+ buf_set_u32(out_value, 0, scan_size, value[j]);
+ (*last_cmd)->cmd.scan->fields[field_count].num_bits = scan_size;
+ (*last_cmd)->cmd.scan->fields[field_count].out_value = buf_cpy(out_value, cmd_queue_alloc(CEIL(scan_size, 8)), scan_size);
+ (*last_cmd)->cmd.scan->fields[field_count].out_mask = NULL;
+ (*last_cmd)->cmd.scan->fields[field_count].in_value = NULL;
+ (*last_cmd)->cmd.scan->fields[field_count].in_check_value = NULL;
+ (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = NULL;
+ (*last_cmd)->cmd.scan->fields[field_count].in_handler = NULL;
+ (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = NULL;
+ }
+ } else
+ {
+#ifdef _DEBUG_JTAG_IO_
+ /* if a device isn't listed, the BYPASS register should be selected */
+ if (!jtag_get_device(i)->bypass)
+ {
+ ERROR("BUG: no scan data for a device not in BYPASS");
+ exit(-1);
+ }
+#endif
+ /* program the scan field to 1 bit length, and ignore it's value */
+ (*last_cmd)->cmd.scan->fields[field_count].num_bits = 1;
+ (*last_cmd)->cmd.scan->fields[field_count].out_value = NULL;
+ (*last_cmd)->cmd.scan->fields[field_count].out_mask = NULL;
+ (*last_cmd)->cmd.scan->fields[field_count].in_value = NULL;
+ (*last_cmd)->cmd.scan->fields[field_count].in_check_value = NULL;
+ (*last_cmd)->cmd.scan->fields[field_count].in_check_mask = NULL;
+ (*last_cmd)->cmd.scan->fields[field_count].in_handler = NULL;
+ (*last_cmd)->cmd.scan->fields[field_count++].in_handler_priv = NULL;
+ }
}
+}
+
+
+
+void jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state state)
+{
+ jtag_prelude(state);
+
+ int retval=interface_jtag_add_plain_dr_scan(num_fields, fields, cmd_queue_end_state);
+ if (retval!=ERROR_OK)
+ jtag_error=retval;
+}
+
+int MINIDRIVER(interface_jtag_add_plain_dr_scan)(int num_fields, scan_field_t *fields, enum tap_state state)
+{
+ int i;
+ jtag_command_t **last_cmd = jtag_get_last_command_p();
+
/* allocate memory for a new list member */
*last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
last_comand_pointer = &((*last_cmd)->next);
(*last_cmd)->cmd.scan->fields = cmd_queue_alloc(num_fields * sizeof(scan_field_t));
(*last_cmd)->cmd.scan->end_state = state;
- if (state != -1)
- cmd_queue_end_state = state;
-
- if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
- jtag_call_event_callbacks(JTAG_TRST_RELEASED);
-
- if (cmd_queue_end_state == TAP_TLR)
- jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
-
- cmd_queue_cur_state = cmd_queue_end_state;
-
for (i = 0; i < num_fields; i++)
{
int num_bits = fields[i].num_bits;
(*last_cmd)->cmd.scan->fields[i].out_value = buf_cpy(fields[i].out_value, cmd_queue_alloc(num_bytes), num_bits);
(*last_cmd)->cmd.scan->fields[i].out_mask = buf_cpy(fields[i].out_mask, cmd_queue_alloc(num_bytes), num_bits);
(*last_cmd)->cmd.scan->fields[i].in_value = fields[i].in_value;
- (*last_cmd)->cmd.scan->fields[i].in_check_value = buf_cpy(fields[i].in_check_value, cmd_queue_alloc(num_bytes), num_bits);
- (*last_cmd)->cmd.scan->fields[i].in_check_mask = buf_cpy(fields[i].in_check_mask, cmd_queue_alloc(num_bytes), num_bits);
+ (*last_cmd)->cmd.scan->fields[i].in_check_value = fields[i].in_check_value;
+ (*last_cmd)->cmd.scan->fields[i].in_check_mask = fields[i].in_check_mask;
(*last_cmd)->cmd.scan->fields[i].in_handler = fields[i].in_handler;
(*last_cmd)->cmd.scan->fields[i].in_handler_priv = fields[i].in_handler_priv;
}
return ERROR_OK;
}
-int jtag_add_statemove(enum tap_state state)
+void jtag_add_statemove(enum tap_state state)
+{
+ jtag_prelude(state);
+
+ int retval;
+ retval=interface_jtag_add_statemove(cmd_queue_end_state);
+ if (retval!=ERROR_OK)
+ jtag_error=retval;
+}
+
+int MINIDRIVER(interface_jtag_add_statemove)(enum tap_state state)
{
jtag_command_t **last_cmd = jtag_get_last_command_p();
- if (jtag_trst == 1)
- {
- WARNING("JTAG command queued, while TRST is low (TAP in reset)");
- return ERROR_JTAG_TRST_ASSERTED;
- }
-
/* allocate memory for a new list member */
*last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
last_comand_pointer = &((*last_cmd)->next);
(*last_cmd)->cmd.statemove = cmd_queue_alloc(sizeof(statemove_command_t));
(*last_cmd)->cmd.statemove->end_state = state;
- if (state != -1)
- cmd_queue_end_state = state;
-
- if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
- jtag_call_event_callbacks(JTAG_TRST_RELEASED);
-
- if (cmd_queue_end_state == TAP_TLR)
- jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
-
- cmd_queue_cur_state = cmd_queue_end_state;
return ERROR_OK;
}
-int jtag_add_pathmove(int num_states, enum tap_state *path)
+void jtag_add_pathmove(int num_states, enum tap_state *path)
{
- jtag_command_t **last_cmd = jtag_get_last_command_p();
- int i;
-
- if (jtag_trst == 1)
- {
- WARNING("JTAG command queued, while TRST is low (TAP in reset)");
- return ERROR_JTAG_TRST_ASSERTED;
- }
-
/* the last state has to be a stable state */
if (tap_move_map[path[num_states - 1]] == -1)
{
- ERROR("TAP path doesn't finish in a stable state");
- return ERROR_JTAG_NOT_IMPLEMENTED;
- }
-
- if (jtag->support_statemove)
- {
- /* allocate memory for a new list member */
- *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
- last_comand_pointer = &((*last_cmd)->next);
- (*last_cmd)->next = NULL;
- (*last_cmd)->type = JTAG_RUNTEST;
-
- (*last_cmd)->cmd.pathmove = cmd_queue_alloc(sizeof(pathmove_command_t));
- (*last_cmd)->cmd.pathmove->num_states = num_states;
- (*last_cmd)->cmd.pathmove->path = cmd_queue_alloc(sizeof(enum tap_state) * num_states);
-
- for (i = 0; i < num_states; i++)
- (*last_cmd)->cmd.pathmove->path[i] = path[i];
+ ERROR("BUG: TAP path doesn't finish in a stable state");
+ exit(-1);
}
- else
+
+ enum tap_state cur_state=cmd_queue_cur_state;
+ int i;
+ for (i=0; i<num_states; i++)
{
- /* validate the desired path, and see if it fits a default path */
- int begin = 0;
- int end = 0;
- int j;
-
- for (i = 0; i < num_states; i++)
+ if ((tap_transitions[cur_state].low != path[i])&&
+ (tap_transitions[cur_state].high != path[i]))
{
- for (j = i; j < num_states; j++)
- {
- if (tap_move_map[path[j]] != -1)
- {
- end = j;
- break;
- }
- }
-
- if (begin - end <= 7) /* a default path spans no more than 7 states */
- {
- jtag_add_statemove(path[end]);
- }
- else
- {
- ERROR("encountered a TAP path that can't be fulfilled by default paths");
- return ERROR_JTAG_NOT_IMPLEMENTED;
- }
-
- i = end;
+ ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_strings[cur_state], tap_state_strings[path[i]]);
+ exit(-1);
}
+ cur_state = path[i];
}
-
- if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
- jtag_call_event_callbacks(JTAG_TRST_RELEASED);
- if (cmd_queue_end_state == TAP_TLR)
- jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
+ jtag_prelude1();
cmd_queue_cur_state = path[num_states - 1];
+
+ int retval=interface_jtag_add_pathmove(num_states, path);
+ if (retval!=ERROR_OK)
+ jtag_error=retval;
+}
+
+
+int MINIDRIVER(interface_jtag_add_pathmove)(int num_states, enum tap_state *path)
+{
+ jtag_command_t **last_cmd = jtag_get_last_command_p();
+ int i;
+
+ /* allocate memory for a new list member */
+ *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
+ last_comand_pointer = &((*last_cmd)->next);
+ (*last_cmd)->next = NULL;
+ (*last_cmd)->type = JTAG_PATHMOVE;
+
+ (*last_cmd)->cmd.pathmove = cmd_queue_alloc(sizeof(pathmove_command_t));
+ (*last_cmd)->cmd.pathmove->num_states = num_states;
+ (*last_cmd)->cmd.pathmove->path = cmd_queue_alloc(sizeof(enum tap_state) * num_states);
+
+ for (i = 0; i < num_states; i++)
+ (*last_cmd)->cmd.pathmove->path[i] = path[i];
return ERROR_OK;
}
-int jtag_add_runtest(int num_cycles, enum tap_state state)
+int MINIDRIVER(interface_jtag_add_runtest)(int num_cycles, enum tap_state state)
{
jtag_command_t **last_cmd = jtag_get_last_command_p();
- if (jtag_trst == 1)
- {
- WARNING("JTAG command queued, while TRST is low (TAP in reset)");
- return ERROR_JTAG_TRST_ASSERTED;
- }
-
/* allocate memory for a new list member */
*last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
(*last_cmd)->next = NULL;
(*last_cmd)->cmd.runtest->num_cycles = num_cycles;
(*last_cmd)->cmd.runtest->end_state = state;
- if (state != -1)
- cmd_queue_end_state = state;
+ return ERROR_OK;
+}
- if (cmd_queue_cur_state == TAP_TLR && cmd_queue_end_state != TAP_TLR)
- jtag_call_event_callbacks(JTAG_TRST_RELEASED);
-
- if (cmd_queue_end_state == TAP_TLR)
- jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
-
- cmd_queue_cur_state = cmd_queue_end_state;
+void jtag_add_runtest(int num_cycles, enum tap_state state)
+{
+ jtag_prelude(state);
- return ERROR_OK;
+ /* executed by sw or hw fifo */
+ int retval=interface_jtag_add_runtest(num_cycles, cmd_queue_end_state);
+ if (retval!=ERROR_OK)
+ jtag_error=retval;
}
int jtag_add_reset(int req_trst, int req_srst)
{
int trst_with_tms = 0;
-
- jtag_command_t **last_cmd = jtag_get_last_command_p();
+ int retval;
if (req_trst == -1)
req_trst = jtag_trst;
/* Make sure that jtag_reset_config allows the requested reset */
/* if SRST pulls TRST, we can't fulfill srst == 1 with trst == 0 */
if (((jtag_reset_config & RESET_SRST_PULLS_TRST) && (req_srst == 1)) && (req_trst == 0))
+ {
+ ERROR("requested reset would assert trst");
return ERROR_JTAG_RESET_WOULD_ASSERT_TRST;
+ }
/* if TRST pulls SRST, we reset with TAP T-L-R */
if (((jtag_reset_config & RESET_TRST_PULLS_SRST) && (req_trst == 1)) && (req_srst == 0))
req_trst = 0;
trst_with_tms = 1;
}
-
- /* allocate memory for a new list member */
- *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
- (*last_cmd)->next = NULL;
- last_comand_pointer = &((*last_cmd)->next);
- (*last_cmd)->type = JTAG_RESET;
-
- (*last_cmd)->cmd.reset = cmd_queue_alloc(sizeof(reset_command_t));
- (*last_cmd)->cmd.reset->trst = req_trst;
- (*last_cmd)->cmd.reset->srst = req_srst;
jtag_trst = req_trst;
jtag_srst = req_srst;
+ retval = interface_jtag_add_reset(req_trst, req_srst);
+ if (retval!=ERROR_OK)
+ {
+ jtag_error=retval;
+ return retval;
+ }
+
if (jtag_srst)
{
- jtag_call_event_callbacks(JTAG_SRST_ASSERTED);
+ DEBUG("SRST line asserted");
}
else
{
- jtag_call_event_callbacks(JTAG_SRST_RELEASED);
+ DEBUG("SRST line released");
if (jtag_nsrst_delay)
jtag_add_sleep(jtag_nsrst_delay * 1000);
}
if (trst_with_tms)
{
- last_cmd = &((*last_cmd)->next);
-
- /* allocate memory for a new list member */
- *last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
- (*last_cmd)->next = NULL;
- last_comand_pointer = &((*last_cmd)->next);
- (*last_cmd)->type = JTAG_STATEMOVE;
-
- (*last_cmd)->cmd.statemove = cmd_queue_alloc(sizeof(statemove_command_t));
- (*last_cmd)->cmd.statemove->end_state = TAP_TLR;
-
+ DEBUG("JTAG reset with tms instead of TRST");
+ jtag_add_end_state(TAP_TLR);
+ jtag_add_statemove(TAP_TLR);
jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
- cmd_queue_cur_state = TAP_TLR;
- cmd_queue_end_state = TAP_TLR;
-
return ERROR_OK;
}
- else
+
+ if (jtag_trst)
{
- if (jtag_trst)
- {
- /* we just asserted nTRST, so we're now in Test-Logic-Reset,
- * and inform possible listeners about this
- */
- cmd_queue_cur_state = TAP_TLR;
- jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
- }
- else
- {
- /* the nTRST line got deasserted, so we're still in Test-Logic-Reset,
- * but we might want to add a delay to give the TAP time to settle
- */
- if (jtag_ntrst_delay)
- jtag_add_sleep(jtag_ntrst_delay * 1000);
- }
+ /* we just asserted nTRST, so we're now in Test-Logic-Reset,
+ * and inform possible listeners about this
+ */
+ DEBUG("TRST line asserted");
+ cmd_queue_cur_state = TAP_TLR;
+ jtag_call_event_callbacks(JTAG_TRST_ASSERTED);
+ }
+ else
+ {
+ /* the nTRST line got deasserted, so we're still in Test-Logic-Reset,
+ * but we might want to add a delay to give the TAP time to settle
+ */
+ DEBUG("Now in TAP_TLR - Test-Logic-Reset(either due to TRST line asserted or tms reset)");
+ if (jtag_ntrst_delay)
+ jtag_add_sleep(jtag_ntrst_delay * 1000);
}
-
return ERROR_OK;
}
-int jtag_add_end_state(enum tap_state state)
+int MINIDRIVER(interface_jtag_add_reset)(int req_trst, int req_srst)
{
jtag_command_t **last_cmd = jtag_get_last_command_p();
-
+
/* allocate memory for a new list member */
*last_cmd = cmd_queue_alloc(sizeof(jtag_command_t));
(*last_cmd)->next = NULL;
last_comand_pointer = &((*last_cmd)->next);
- (*last_cmd)->type = JTAG_END_STATE;
+ (*last_cmd)->type = JTAG_RESET;
- (*last_cmd)->cmd.end_state = cmd_queue_alloc(sizeof(end_state_command_t));
- (*last_cmd)->cmd.end_state->end_state = state;
+ (*last_cmd)->cmd.reset = cmd_queue_alloc(sizeof(reset_command_t));
+ (*last_cmd)->cmd.reset->trst = req_trst;
+ (*last_cmd)->cmd.reset->srst = req_srst;
- if (state != -1)
- cmd_queue_end_state = state;
return ERROR_OK;
}
-int jtag_add_sleep(u32 us)
+void jtag_add_end_state(enum tap_state state)
+{
+ cmd_queue_end_state = state;
+}
+
+int MINIDRIVER(interface_jtag_add_sleep)(u32 us)
{
jtag_command_t **last_cmd = jtag_get_last_command_p();
return ERROR_OK;
}
+void jtag_add_sleep(u32 us)
+{
+ int retval=interface_jtag_add_sleep(us);
+ if (retval!=ERROR_OK)
+ jtag_error=retval;
+ return;
+}
+
int jtag_scan_size(scan_command_t *cmd)
{
int bit_count = 0;
int i;
/* count bits in scan command */
- for (i=0; i<cmd->num_fields; i++)
+ for (i = 0; i < cmd->num_fields; i++)
{
bit_count += cmd->fields[i].num_bits;
}
{
if (cmd->fields[i].out_value)
{
- char* char_buf = buf_to_char(cmd->fields[i].out_value, cmd->fields[i].num_bits);
- buf_set_buf(cmd->fields[i].out_value, 0, *buffer, bit_count, cmd->fields[i].num_bits);
#ifdef _DEBUG_JTAG_IO_
- DEBUG("fields[%i].out_value: %s", i, char_buf);
+ char* char_buf = buf_to_str(cmd->fields[i].out_value, (cmd->fields[i].num_bits > 64) ? 64 : cmd->fields[i].num_bits, 16);
#endif
+ buf_set_buf(cmd->fields[i].out_value, 0, *buffer, bit_count, cmd->fields[i].num_bits);
+#ifdef _DEBUG_JTAG_IO_
+ DEBUG("fields[%i].out_value: 0x%s", i, char_buf);
free(char_buf);
+#endif
}
bit_count += cmd->fields[i].num_bits;
{
int i;
int bit_count = 0;
- int retval = ERROR_OK;
-
- for (i=0; i < cmd->num_fields; i++)
+ int retval;
+
+ /* we return ERROR_OK, unless a check fails, or a handler reports a problem */
+ retval = ERROR_OK;
+
+ for (i = 0; i < cmd->num_fields; i++)
{
- /* if neither in_value nor in_check_value are specified we don't have to examine this field */
- if (cmd->fields[i].in_value || cmd->fields[i].in_check_value)
+ /* if neither in_value nor in_handler
+ * are specified we don't have to examine this field
+ */
+ if (cmd->fields[i].in_value || cmd->fields[i].in_handler)
{
int num_bits = cmd->fields[i].num_bits;
+ u8 *captured = buf_set_buf(buffer, bit_count, malloc(CEIL(num_bits, 8)), 0, num_bits);
+
+#ifdef _DEBUG_JTAG_IO_
+ char *char_buf;
+ char_buf = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16);
+ DEBUG("fields[%i].in_value: 0x%s", i, char_buf);
+ free(char_buf);
+#endif
+
if (cmd->fields[i].in_value)
{
- char *char_buf;
- buf_set_buf(buffer, bit_count, cmd->fields[i].in_value, 0, num_bits);
- char_buf = buf_to_char(cmd->fields[i].in_value, num_bits);
-#ifdef _DEBUG_JTAG_IO_
- DEBUG("fields[%i].in_value: %s", i, char_buf);
-#endif
- free(char_buf);
+ buf_cpy(captured, cmd->fields[i].in_value, num_bits);
+
if (cmd->fields[i].in_handler)
{
- if (cmd->fields[i].in_handler(cmd->fields[i].in_value, cmd->fields[i].in_handler_priv) != ERROR_OK)
+ if (cmd->fields[i].in_handler(cmd->fields[i].in_value, cmd->fields[i].in_handler_priv, cmd->fields+i) != ERROR_OK)
{
- /* TODO: error reporting */
WARNING("in_handler reported a failed check");
retval = ERROR_JTAG_QUEUE_FAILED;
}
}
}
-
- if (cmd->fields[i].in_check_value)
+
+ /* no in_value specified, but a handler takes care of the scanned data */
+ if (cmd->fields[i].in_handler && (!cmd->fields[i].in_value))
{
- u8 *captured = buf_set_buf(buffer, bit_count, malloc(CEIL(num_bits, 8)), 0, num_bits);
- if ((cmd->fields[i].in_check_mask && buf_cmp_mask(captured, cmd->fields[i].in_check_value, cmd->fields[i].in_check_mask, num_bits))
- || (!cmd->fields[i].in_check_mask && buf_cmp(captured, cmd->fields[i].in_check_mask, num_bits)))
+ if (cmd->fields[i].in_handler(captured, cmd->fields[i].in_handler_priv, cmd->fields+i) != ERROR_OK)
{
- char *captured_char = buf_to_char(captured, num_bits);
- char *in_check_value_char = buf_to_char(cmd->fields[i].in_check_value, num_bits);
- char *in_check_mask_char = buf_to_char(cmd->fields[i].in_check_mask, num_bits);
- /* TODO: error reporting */
- WARNING("value captured during scan didn't pass the requested check: captured: %s check_value: %s check_mask: %s", captured_char, in_check_value_char, in_check_mask_char);
+ /* We're going to call the error:handler later, but if the in_handler
+ * reported an error we report this failure upstream
+ */
+ WARNING("in_handler reported a failed check");
retval = ERROR_JTAG_QUEUE_FAILED;
- free(captured_char);
- free(in_check_value_char);
- free(in_check_mask_char);
}
- free(captured);
}
+
+ free(captured);
}
bit_count += cmd->fields[i].num_bits;
}
return retval;
}
+int jtag_check_value(u8 *captured, void *priv, scan_field_t *field)
+{
+ int retval = ERROR_OK;
+ int num_bits = field->num_bits;
+
+ int compare_failed = 0;
+
+ if (field->in_check_mask)
+ compare_failed = buf_cmp_mask(captured, field->in_check_value, field->in_check_mask, num_bits);
+ else
+ compare_failed = buf_cmp(captured, field->in_check_value, num_bits);
+
+ if (compare_failed)
+ {
+ /* An error handler could have caught the failing check
+ * only report a problem when there wasn't a handler, or if the handler
+ * acknowledged the error
+ */
+ if (compare_failed)
+ {
+ char *captured_char = buf_to_str(captured, (num_bits > 64) ? 64 : num_bits, 16);
+ char *in_check_value_char = buf_to_str(field->in_check_value, (num_bits > 64) ? 64 : num_bits, 16);
+
+ if (field->in_check_mask)
+ {
+ char *in_check_mask_char;
+ in_check_mask_char = buf_to_str(field->in_check_mask, (num_bits > 64) ? 64 : num_bits, 16);
+ WARNING("value captured during scan didn't pass the requested check: captured: 0x%s check_value: 0x%s check_mask: 0x%s", captured_char, in_check_value_char, in_check_mask_char);
+ free(in_check_mask_char);
+ }
+ else
+ {
+ WARNING("value captured during scan didn't pass the requested check: captured: 0x%s check_value: 0x%s", captured_char, in_check_value_char);
+ }
+
+ free(captured_char);
+ free(in_check_value_char);
+
+ retval = ERROR_JTAG_QUEUE_FAILED;
+ }
+
+ }
+ return retval;
+}
+
+/*
+ set up checking of this field using the in_handler. The values passed in must be valid until
+ after jtag_execute() has completed.
+ */
+void jtag_set_check_value(scan_field_t *field, u8 *value, u8 *mask, error_handler_t *in_error_handler)
+{
+ if (value)
+ field->in_handler = jtag_check_value;
+ else
+ field->in_handler = NULL; /* No check, e.g. embeddedice uses value==NULL to indicate no check */
+ field->in_handler_priv = NULL; /* this will be filled in at the invocation site to point to the field duplicate */
+ field->in_check_value = value;
+ field->in_check_mask = mask;
+}
+
enum scan_type jtag_scan_type(scan_command_t *cmd)
{
int i;
int type = 0;
- for (i=0; i < cmd->num_fields; i++)
+ for (i = 0; i < cmd->num_fields; i++)
{
- if (cmd->fields[i].in_check_value || cmd->fields[i].in_value)
+ if (cmd->fields[i].in_value || cmd->fields[i].in_handler)
type |= SCAN_IN;
if (cmd->fields[i].out_value)
type |= SCAN_OUT;
return type;
}
-int jtag_execute_queue(void)
+int MINIDRIVER(interface_jtag_execute_queue)(void)
{
int retval;
return retval;
}
-int jtag_cancel_queue(void)
+int jtag_execute_queue(void)
{
- cmd_queue_free();
- jtag_command_queue = NULL;
- last_comand_pointer = &jtag_command_queue;
-
- return ERROR_OK;
+ int retval=interface_jtag_execute_queue();
+ if (retval==ERROR_OK)
+ {
+ retval=jtag_error;
+ }
+ jtag_error=ERROR_OK;
+ return retval;
}
int jtag_reset_callback(enum jtag_event event, void *priv)
{
jtag_device_t *device = priv;
- DEBUG("");
+ DEBUG("-");
if (event == JTAG_TRST_ASSERTED)
{
usleep(us);
}
+/* Try to examine chain layout according to IEEE 1149.1 §12
+ */
+int jtag_examine_chain()
+{
+ jtag_device_t *device = jtag_devices;
+ scan_field_t field;
+ u8 idcode_buffer[JTAG_MAX_CHAIN_SIZE * 4];
+ int i;
+ int bit_count;
+ int device_count = 0;
+ u8 zero_check = 0x0;
+ u8 one_check = 0xff;
+
+ field.device = 0;
+ field.num_bits = sizeof(idcode_buffer) * 8;
+ field.out_value = idcode_buffer;
+ field.out_mask = NULL;
+ field.in_value = idcode_buffer;
+ field.in_check_value = NULL;
+ field.in_check_mask = NULL;
+ field.in_handler = NULL;
+ field.in_handler_priv = NULL;
+
+ for (i = 0; i < JTAG_MAX_CHAIN_SIZE; i++)
+ {
+ buf_set_u32(idcode_buffer, i * 32, 32, 0x000000FF);
+ }
+
+ jtag_add_plain_dr_scan(1, &field, TAP_TLR);
+ jtag_execute_queue();
+
+ for (i = 0; i < JTAG_MAX_CHAIN_SIZE * 4; i++)
+ {
+ zero_check |= idcode_buffer[i];
+ one_check &= idcode_buffer[i];
+ }
+
+ /* if there wasn't a single non-zero bit or if all bits were one, the scan isn't valid */
+ if ((zero_check == 0x00) || (one_check == 0xff))
+ {
+ ERROR("JTAG communication failure, check connection, JTAG interface, target power etc.");
+ return ERROR_JTAG_INIT_FAILED;
+ }
+
+ for (bit_count = 0; bit_count < (JTAG_MAX_CHAIN_SIZE * 32) - 31;)
+ {
+ u32 idcode = buf_get_u32(idcode_buffer, bit_count, 32);
+ if ((idcode & 1) == 0)
+ {
+ /* LSB must not be 0, this indicates a device in bypass */
+ device_count++;
+
+ bit_count += 1;
+ }
+ else
+ {
+ u32 manufacturer;
+ u32 part;
+ u32 version;
+
+ if (idcode == 0x000000FF)
+ {
+ /* End of chain (invalid manufacturer ID) */
+ break;
+ }
+
+ if (device)
+ {
+ device->idcode = idcode;
+ device = device->next;
+ }
+ device_count++;
+
+ manufacturer = (idcode & 0xffe) >> 1;
+ part = (idcode & 0xffff000) >> 12;
+ version = (idcode & 0xf0000000) >> 28;
+
+ INFO("JTAG device found: 0x%8.8x (Manufacturer: 0x%3.3x, Part: 0x%4.4x, Version: 0x%1.1x)",
+ idcode, manufacturer, part, version);
+
+ bit_count += 32;
+ }
+ }
+
+ /* see if number of discovered devices matches configuration */
+ if (device_count != jtag_num_devices)
+ {
+ ERROR("number of discovered devices in JTAG chain (%i) doesn't match configuration (%i)",
+ device_count, jtag_num_devices);
+ ERROR("check the config file and ensure proper JTAG communication (connections, speed, ...)");
+ return ERROR_JTAG_INIT_FAILED;
+ }
+
+ return ERROR_OK;
+}
+
int jtag_validate_chain()
{
jtag_device_t *device = jtag_devices;
{
if (buf_get_u32(ir_test, chain_pos, 2) != 0x1)
{
- ERROR("Error validating JTAG scan chain, IR mismatch");
- exit(-1);
+ char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
+ ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf);
+ free(cbuf);
+ free(ir_test);
+ return ERROR_JTAG_INIT_FAILED;
}
chain_pos += device->ir_length;
device = device->next;
if (buf_get_u32(ir_test, chain_pos, 2) != 0x3)
{
- ERROR("Error validating JTAG scan chain, IR mismatch");
- exit(-1);
+ char *cbuf = buf_to_str(ir_test, total_ir_length, 16);
+ ERROR("Error validating JTAG scan chain, IR mismatch, scan returned 0x%s", cbuf);
+ free(cbuf);
+ free(ir_test);
+ return ERROR_JTAG_INIT_FAILED;
}
free(ir_test);
register_command(cmd_ctx, NULL, "interface", handle_interface_command,
COMMAND_CONFIG, NULL);
register_command(cmd_ctx, NULL, "jtag_speed", handle_jtag_speed_command,
- COMMAND_ANY, "set jtag speed (if supported) <speed>");
+ COMMAND_ANY, "set jtag speed (if supported) <reset speed> [<post reset speed, default value is reset speed>]");
register_command(cmd_ctx, NULL, "jtag_device", handle_jtag_device_command,
- COMMAND_CONFIG, NULL);
+ COMMAND_CONFIG, "jtag_device <ir_length> <ir_expected> <ir_mask>");
register_command(cmd_ctx, NULL, "reset_config", handle_reset_config_command,
COMMAND_CONFIG, NULL);
register_command(cmd_ctx, NULL, "jtag_nsrst_delay", handle_jtag_nsrst_delay_command,
return ERROR_OK;
}
+int jtag_interface_init(struct command_context_s *cmd_ctx)
+{
+ if (!jtag_interface)
+ {
+ /* nothing was previously specified by "interface" command */
+ ERROR("JTAG interface has to be specified, see \"interface\" command");
+ return ERROR_JTAG_INVALID_INTERFACE;
+ }
+
+ if (jtag_interface->init() != ERROR_OK)
+ return ERROR_JTAG_INIT_FAILED;
+
+ jtag = jtag_interface;
+ return ERROR_OK;
+}
+
int jtag_init(struct command_context_s *cmd_ctx)
{
- int i;
-
- DEBUG("");
+ int validate_tries = 0;
+ jtag_device_t *device;
- if (jtag_speed == -1)
- jtag_speed = 0;
+ DEBUG("-");
- if (jtag_interface && (jtag_interface[0] != 0))
- /* configuration var 'jtag_interface' is set, and not empty */
- for (i = 0; jtag_interfaces[i]; i++)
- {
- if (strcmp(jtag_interface, jtag_interfaces[i]->name) == 0)
- {
- jtag_device_t *device;
- device = jtag_devices;
+ if (!jtag && jtag_interface_init(cmd_ctx) != ERROR_OK)
+ return ERROR_JTAG_INIT_FAILED;
+
+ device = jtag_devices;
+ jtag_ir_scan_size = 0;
+ jtag_num_devices = 0;
+ while (device != NULL)
+ {
+ jtag_ir_scan_size += device->ir_length;
+ jtag_num_devices++;
+ device = device->next;
+ }
- if (jtag_interfaces[i]->init() != ERROR_OK)
- return ERROR_JTAG_INIT_FAILED;
- jtag = jtag_interfaces[i];
+ jtag_add_statemove(TAP_TLR);
+ jtag_execute_queue();
- jtag_ir_scan_size = 0;
- jtag_num_devices = 0;
- while (device != NULL)
- {
- jtag_ir_scan_size += device->ir_length;
- jtag_num_devices++;
- device = device->next;
- }
-
- jtag_add_statemove(TAP_TLR);
- jtag_execute_queue();
-
- jtag_validate_chain();
-
- return ERROR_OK;
- }
- }
+ /* examine chain first, as this could discover the real chain layout */
+ if (jtag_examine_chain() != ERROR_OK)
+ {
+ ERROR("trying to validate configured JTAG chain anyway...");
+ }
- /* no valid interface was found (i.e. the configuration option,
- * didn't match one of the compiled-in interfaces
- */
- ERROR("No valid jtag interface found (%s)", jtag_interface);
- jtag = NULL;
- return ERROR_JTAG_INVALID_INTERFACE;
+ while (jtag_validate_chain() != ERROR_OK)
+ {
+ validate_tries++;
+ if (validate_tries > 5)
+ {
+ ERROR("Could not validate JTAG chain, exit");
+ return ERROR_JTAG_INVALID_INTERFACE;
+ }
+ usleep(10000);
+ }
+
+ return ERROR_OK;
}
+
int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
int i;
-
- /* only if the configuration var isn't overwritten from cmdline */
- if (!jtag_interface)
+
+ /* check whether the interface is already configured */
+ if (jtag_interface)
+ {
+ WARNING("Interface already configured, ignoring");
+ return ERROR_OK;
+ }
+
+ /* interface name is a mandatory argument */
+ if (argc < 1 || args[0][0] == '\0')
+ {
+ return ERROR_COMMAND_SYNTAX_ERROR;
+ }
+
+ for (i=0; jtag_interfaces[i]; i++)
{
- if (args[0] && (args[0][0] != 0))
+ if (strcmp(args[0], jtag_interfaces[i]->name) == 0)
{
- for (i=0; jtag_interfaces[i]; i++)
- {
- if (strcmp(args[0], jtag_interfaces[i]->name) == 0)
- {
- if (jtag_interfaces[i]->register_commands(cmd_ctx) != ERROR_OK)
- exit(-1);
-
- jtag_interface = jtag_interfaces[i]->name;
-
- return ERROR_OK;
- }
- }
+ if (jtag_interfaces[i]->register_commands(cmd_ctx) != ERROR_OK)
+ exit(-1);
+
+ jtag_interface = jtag_interfaces[i];
+ return ERROR_OK;
}
-
- /* remember the requested interface name, so we can complain about it later */
- jtag_interface = strdup(args[0]);
- DEBUG("'interface' command didn't specify a valid interface");
}
-
- return ERROR_OK;
+
+ /* no valid interface was found (i.e. the configuration option,
+ * didn't match one of the compiled-in interfaces
+ */
+ ERROR("No valid jtag interface found (%s)", args[0]);
+ ERROR("compiled-in jtag interfaces:");
+ for (i = 0; jtag_interfaces[i]; i++)
+ {
+ ERROR("%i: %s", i, jtag_interfaces[i]->name);
+ }
+
+ return ERROR_JTAG_INVALID_INTERFACE;
}
int handle_jtag_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
jtag_register_event_callback(jtag_reset_callback, (*last_device_p));
jtag_num_devices++;
-
+
return ERROR_OK;
}
jtag_reset_config = RESET_TRST_AND_SRST;
else
{
- ERROR("invalid reset_config argument");
- exit(-1);
+ ERROR("invalid reset_config argument, defaulting to none");
+ jtag_reset_config = RESET_NONE;
+ return ERROR_INVALID_ARGUMENTS;
}
}
jtag_reset_config &= ~(RESET_SRST_PULLS_TRST | RESET_TRST_PULLS_SRST);
else
{
- ERROR("invalid reset_config argument");
- exit(-1);
+ ERROR("invalid reset_config argument, defaulting to none");
+ jtag_reset_config = RESET_NONE;
+ return ERROR_INVALID_ARGUMENTS;
}
}
jtag_reset_config &= ~RESET_TRST_OPEN_DRAIN;
else
{
- ERROR("invalid reset_config argument");
- exit(-1);
+ ERROR("invalid reset_config argument, defaulting to none");
+ jtag_reset_config = RESET_NONE;
+ return ERROR_INVALID_ARGUMENTS;
}
}
jtag_reset_config &= ~RESET_SRST_PUSH_PULL;
else
{
- ERROR("invalid reset_config argument");
- exit(-1);
+ ERROR("invalid reset_config argument, defaulting to none");
+ jtag_reset_config = RESET_NONE;
+ return ERROR_INVALID_ARGUMENTS;
}
}
int handle_jtag_speed_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
- if (argc == 0)
- command_print(cmd_ctx, "jtag_speed: %i", jtag_speed);
+ int cur_speed = 0;
+ if ((argc<1) || (argc>2))
+ return ERROR_COMMAND_SYNTAX_ERROR;
- if (argc > 0)
- {
- /* this command can be called during CONFIG,
- * in which case jtag isn't initialized */
- if (jtag)
- jtag->speed(strtoul(args[0], NULL, 0));
- else
- jtag_speed = strtoul(args[0], NULL, 0);
- }
+ if (argc >= 1)
+ cur_speed = jtag_speed = jtag_speed_post_reset = strtoul(args[0], NULL, 0);
+ if (argc == 2)
+ cur_speed = jtag_speed_post_reset = strtoul(args[1], NULL, 0);
+
+ /* this command can be called during CONFIG,
+ * in which case jtag isn't initialized */
+ if (jtag)
+ jtag->speed(cur_speed);
return ERROR_OK;
}
if (argc < 1)
{
- command_print(cmd_ctx, "usage: endstate <tap_state>");
- return ERROR_OK;
+ return ERROR_COMMAND_SYNTAX_ERROR;
}
-
- for (state = 0; state < 16; state++)
+ else
{
- if (strcmp(args[0], tap_state_strings[state]) == 0)
+ for (state = 0; state < 16; state++)
{
- jtag_add_end_state(state);
- jtag_execute_queue();
+ if (strcmp(args[0], tap_state_strings[state]) == 0)
+ {
+ jtag_add_end_state(state);
+ jtag_execute_queue();
+ }
}
}
+ command_print(cmd_ctx, "current endstate: %s", tap_state_strings[end_state]);
return ERROR_OK;
}
{
int trst = -1;
int srst = -1;
- char *usage = "usage: jtag_reset <trst> <srst>";
- int retval;
- if (argc < 1)
+ if (argc < 2)
{
- command_print(cmd_ctx, usage);
- return ERROR_OK;
+ return ERROR_COMMAND_SYNTAX_ERROR;
}
if (args[0][0] == '1')
trst = 0;
else
{
- command_print(cmd_ctx, usage);
- return ERROR_OK;
+ return ERROR_COMMAND_SYNTAX_ERROR;
}
if (args[1][0] == '1')
srst = 0;
else
{
- command_print(cmd_ctx, usage);
- return ERROR_OK;
+ return ERROR_COMMAND_SYNTAX_ERROR;
}
- if ((retval = jtag_add_reset(trst, srst)) != ERROR_OK)
- {
- switch (retval)
- {
- case ERROR_JTAG_RESET_WOULD_ASSERT_TRST:
- command_print(cmd_ctx, "requested reset would assert trst\nif this is acceptable, use jtag_reset 1 %c", args[1][0]);
- break;
- case ERROR_JTAG_RESET_CANT_SRST:
- command_print(cmd_ctx, "can't assert srst because the current reset_config doesn't support it");
- break;
- default:
- command_print(cmd_ctx, "unknown error");
- }
- }
+ if (!jtag && jtag_interface_init(cmd_ctx) != ERROR_OK)
+ return ERROR_JTAG_INIT_FAILED;
+
+ jtag_add_reset(trst, srst);
jtag_execute_queue();
return ERROR_OK;
{
if (argc < 1)
{
- command_print(cmd_ctx, "usage: runtest <num_cycles>");
- return ERROR_OK;
+ return ERROR_COMMAND_SYNTAX_ERROR;
}
jtag_add_runtest(strtol(args[0], NULL, 0), -1);
if ((argc < 2) || (argc % 2))
{
- command_print(cmd_ctx, "usage: irscan <device> <instr> [dev2] [instr2] ...");
- return ERROR_OK;
+ return ERROR_COMMAND_SYNTAX_ERROR;
}
fields = malloc(sizeof(scan_field_t) * argc / 2);
if ((argc < 2) || (argc % 2))
{
- command_print(cmd_ctx, "usage: drscan <device> <var> [dev2] [var2]");
- return ERROR_OK;
+ return ERROR_COMMAND_SYNTAX_ERROR;
}
for (i = 0; i < argc; i+=2)
int handle_verify_ircapture_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
{
- if (argc == 0)
- {
- command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled");
- return ERROR_OK;
- }
-
- if (strcmp(args[0], "enable") == 0)
+ if (argc == 1)
{
- jtag_verify_capture_ir = 1;
- }
- else if (strcmp(args[0], "disable") == 0)
+ if (strcmp(args[0], "enable") == 0)
+ {
+ jtag_verify_capture_ir = 1;
+ }
+ else if (strcmp(args[0], "disable") == 0)
+ {
+ jtag_verify_capture_ir = 0;
+ } else
+ {
+ return ERROR_COMMAND_SYNTAX_ERROR;
+ }
+ } else if (argc != 0)
{
- jtag_verify_capture_ir = 0;
+ return ERROR_COMMAND_SYNTAX_ERROR;
}
+ command_print(cmd_ctx, "verify Capture-IR is %s", (jtag_verify_capture_ir) ? "enabled": "disabled");
+
return ERROR_OK;
}
projects / fw / openocd / blobdiff